CN209830927U - Clamp for processing external thread of copper pipe - Google Patents
Clamp for processing external thread of copper pipe Download PDFInfo
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- CN209830927U CN209830927U CN201920160728.9U CN201920160728U CN209830927U CN 209830927 U CN209830927 U CN 209830927U CN 201920160728 U CN201920160728 U CN 201920160728U CN 209830927 U CN209830927 U CN 209830927U
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- copper pipe
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Abstract
The utility model discloses a clamp for processing copper pipe external threads, which is provided with a base, wherein a fixed support, a first movable support and a first chute are arranged on the same horizontal axis of the base, and the first movable support is arranged on the first chute; a synchronous clamping mechanism is arranged on the fixed bracket; the first movable support is provided with a bearing and an auxiliary guide post; still be equipped with the second on the base and remove the support, the second removes the support and is equipped with the conduit saddle. This anchor clamps for processing of copper pipe external screw thread convenient to use can the various copper pipes of specification length of centre gripping, and application scope is wide, and the centre gripping is stable, firm moreover, and axial supports better, and the deformation is less in the copper pipe course of working.
Description
Technical Field
The utility model relates to anchor clamps technical field, concretely relates to anchor clamps are used in processing of copper pipe external screw thread.
Background
Copper pipe tapping is a common processing means in machining, and before tapping, a part to be processed needs to be fixed, and then tapping operation is performed on the part to be processed. In recent years, with the development of machine tool technology, machine tool turning and milling methods are gradually adopted to machine threads, so that a special copper pipe thread machining clamp is required.
For example, chinese utility model patent (publication No. CN205008875U) discloses in 2015 a clamp for tapping external threads, including the clamp body and backplate, the backplate vertical fixation still includes the guide pillar at the specific top of clamp, the both ends surface of guide pillar is equipped with the screw thread, and the one end of guide pillar is inserted in the downthehole nut of backplate and is fixed, and the other end of guide pillar has also screwed fixation nut. The fixture for tapping the external thread has a simple structure, and can tap the external thread on the pipe part. But in the course of working, the pipe levelness is not guaranteed well, produces the deformation easily, only relies on bolt fastening moreover, and the pipe can perhaps rotate relatively between with anchor clamps, makes the screw thread of attacking inaccurate, and especially when processing longer copper pipe external screw thread, the copper pipe lacks the support, and the axial is beated easily, is out of shape easily, and the rejection rate is higher.
In addition, because the copper pipe is soft, the clamp is asynchronous when clamping, and the copper pipe is uneven in stress and easy to deform; and aiming at copper pipes with different lengths and pipe diameters, multiple sets of clamps need to be prepared, and the cost is higher.
Disclosure of Invention
The utility model aims at providing a copper pipe is anchor clamps for external screw thread processing to the problem that prior art exists.
In order to achieve the above object, the utility model adopts the following technical scheme:
a fixture for processing external threads of a copper pipe is provided with a base, wherein a fixed support, a first movable support and a first sliding groove are arranged on the same horizontal axis of the base, the bottom of the fixed support is fixed on one side of the base, one end of the first sliding groove is close to the fixed support, the other end of the first sliding groove extends to the other side edge of the base, and the first movable support is arranged on the first sliding groove; a main shaft is arranged above the fixed support, and a synchronous clamping mechanism is arranged on the end face, facing the first movable support, of the main shaft; an auxiliary shaft is arranged above the first movable support, a bearing is arranged on the end face, facing the fixed support, of the auxiliary shaft, and an auxiliary guide column fixed on the auxiliary shaft is arranged in the middle of the bearing; the main shaft and the auxiliary shaft are on the same axis. The copper pipe is clamped fast through the synchronous clamping mechanism on the main shaft, the copper pipe is further fixed through the bearing and the guide column on the auxiliary shaft, the two ends of the copper pipe are clamped, the levelness and the axial precision of the copper pipe are guaranteed by using the main shaft and the auxiliary shaft simultaneously, when the length of the copper pipe to be machined is different, the copper pipes with different lengths can be clamped and fixed by only sliding the first movable support and adjusting the distance between the first movable support and the fixed support, and external threads are machined.
Specifically, the synchronous clamping mechanism comprises a fixed disk fixed on the main shaft and a rotating disk coaxial with the fixed disk, and the fixed disk is sleeved outside the rotating disk; a plurality of radial chutes are uniformly distributed on the fixed disc, each chute is provided with a clamping arm, the side surface of each clamping arm is a rack surface, and the end part of each clamping arm is provided with an arc-shaped chuck; the gear rack is characterized in that a plurality of gear shafts meshed with the rack surfaces are arranged on the rotating disc, the gear shafts are installed on the rotating disc, gear rings matched with the gear shafts are arranged on the rotating disc, and the gear shafts and the clamping arms are arranged in a one-to-one correspondence mode. The clamping arm is provided with a sliding end, the end part of the sliding end is positioned in a radial sliding groove, and a fixed block and a limiting block are arranged in the sliding groove.
The middle of one side of the rotating disc, which is provided with the gear shaft, is provided with a spherical bulge, copper pipes with different pipe diameters can be propped against the spherical bulge at any time, the middle of the other side of the rotating disc is connected with a motor through a transmission shaft, and the rotating disc is driven by the motor to rotate more conveniently and easily controlled.
The gear ring on the rotating disc drives all gear shafts to synchronously rotate in one direction and drives all clamping arms to synchronously move along the radial direction, so that the copper pipe is clamped and released. The synchronous clamping mechanism enables the clamping arms to simultaneously apply clamping force to clamp the outer wall of the copper pipe, so that the outer wall of the copper pipe is evenly stressed and is not easy to deform, the clamping arms can synchronously move along the radial direction, the copper pipes with different pipe diameters can be clamped, a plurality of sets of clamps are not required to be prepared, and the cost is saved. In addition, the arc-shaped chuck is more suitable for clamping the pipe wall, the stress range and the clamping range of the pipe wall are enlarged, and the copper pipe is clamped more firmly.
Specifically, still be equipped with on the base with the second spout that the first spout is parallel, install the second on the second spout and remove the support, the second removes the support and has vertical portion and horizontal part, the horizontal part tip is equipped with the conduit saddle, the conduit saddle is located directly over the first spout, the conduit saddle is used for holding the copper pipe. The second movable support is slid along with the processing, so that the pipe bracket is always close to the area to be processed of the copper pipe, the axial support is provided for the copper pipe, the axial deformation of the copper pipe is reduced, particularly, when a longer copper pipe is processed, the effect is obvious, the number of the second movable supports can be properly increased according to the length condition of the copper pipe, and the axial support for the copper pipe is increased.
Furthermore, a plurality of grooves are formed in the inner surface of the pipe bracket, and a plurality of balls are embedded in the grooves. The setting up of ball makes things convenient for the conduit saddle to slide along the copper pipe outer wall, according to the progress of processing, conveniently adjusts the position of support at any time.
Specifically, an inclined pulling plate or a plurality of inclined pulling rods are arranged between the vertical part and the horizontal part, and the inclined pulling plate or the inclined pulling rod plays a role in enhancing the strength of the horizontal part and stabilizing the second movable support; the pipe bracket is semicircular, the radian of the inner surface of the pipe bracket is the same as that of the outer ring of the copper pipe, the length of the pipe bracket is larger than the width of the horizontal part, and the vertical height of the pipe bracket is the same as the clamping height of the copper pipe. The semicircular pipe bracket is matched with the outer ring of the copper pipe, so that the copper pipe can be supported just, the copper pipe is wrapped, the pipe bracket does not slide along with the support, and the position of the support can be adjusted conveniently at any time.
Specifically, the bearing is a bearing with a seat, is directly connected with the auxiliary shaft through a bolt, can use bearings of different models according to copper pipes with different pipe diameters, and is not in direct contact with the auxiliary guide post. The auxiliary shaft and the auxiliary guide column play a role in guiding and positioning, so that the copper pipe is kept horizontal, and the bearing can enable the copper pipe to rotate along with the main shaft without being separated from the auxiliary shaft.
Specifically, the diameters of the auxiliary guide columns are smaller than the inner diameter of the copper pipe, the copper pipe can be normally sleeved into the auxiliary guide columns, the end parts of the auxiliary guide columns are of conical structures, so that the auxiliary guide columns are easy to align to pipe openings when sleeved, and the operation is more convenient.
Specifically, the first sliding groove is a T-shaped groove, and a sliding limiting block and a positioning block are arranged at the lower part of the first movable support; the second sliding groove is also provided with a T-shaped groove, and the lower part of the second movable support is also provided with a sliding limiting block and a positioning block.
Specifically, the fixed bolster passes through the bolt or welded mode is fixed on the base, the side of fixed bolster with still be equipped with the floor between the base, make the fixed bolster is firm to be fixed on the base, avoid the fixed bolster to take place to rock, strengthen the fixed stability of copper pipe.
When the clamp for processing the external thread of the copper pipe is used, one end of the copper pipe to be processed is abutted against the spherical bulge, the motor is controlled to drive the rotating disc to rotate anticlockwise, the gear ring on the rotating disc rotates anticlockwise along with the rotating disc, all the gear shafts are driven to rotate anticlockwise, and the gear on the upper portion of each gear shaft drives each clamping arm to move towards the copper pipe simultaneously until the copper pipe is clamped; moving the first movable support to a proper position, connecting the other end of the copper pipe with the bearing and sleeving the other end of the copper pipe on the auxiliary guide post; at the moment, the second movable support is moved, the copper pipe is supported by the pipe support, and the axial stability of the copper pipe is kept. And the external thread processing of the copper pipe can be started, and the second movable support is moved in real time to support different parts of the copper pipe in the processing process.
Compared with the prior art, the beneficial effects of the utility model are that: 1. the clamp for processing the external thread of the copper pipe is convenient to use, and the movable bracket and the synchronous clamping mechanism enable the clamp to clamp copper pipes of various specifications, so that the application range is wide; 2. the arc-shaped chuck is more suitable for clamping the copper pipe, and is matched with each clamping arm for use, so that the clamping stress area is larger, the stress is more uniform, the deformation of the copper pipe caused by clamping is avoided, and the clamping effect is better and firmer; 3. the two ends of the copper pipe are both provided with supports and clamps, so that the accuracy of the horizontal axis in the copper pipe processing is ensured, and the axial precision is ensured; 4. the pipe bracket is further arranged to provide support for the axial direction of the copper pipe, so that the axial runout is reduced, and the accuracy of copper pipe thread machining is ensured.
Drawings
FIG. 1 is a schematic view of the main view of the fixture for processing external threads of copper pipes of the present invention;
FIG. 2 is a schematic view of the overlooking structure of the fixture for processing the external thread of the copper pipe;
FIG. 3 is a schematic structural view of the synchronous clamping mechanism of the fixture for processing the external thread of the copper pipe;
FIG. 4 is a schematic view of a-a sectional structure of the fixture synchronous clamping mechanism for processing external threads of copper pipes according to the present invention;
FIG. 5 is a schematic structural view of a second movable support of the fixture for processing external threads of copper pipes according to the present invention;
FIG. 6 is a schematic view of the structure of a chute of the fixture for processing external threads of copper pipes according to the present invention;
in the figure: 1. a base; 2. fixing a bracket; 3. a first moving support; 4. a first chute; 5. a main shaft; 6. a synchronous clamping mechanism; 601. fixing the disc; 602. rotating the disc; 603. a chute; 604. clamping arms; 605. a rack face; 606. a gear shaft; 607. a chuck; 608. a ring gear; 7. a protrusion; 8. a counter shaft; 9. a bearing; 10. a secondary guide post; 11. a second chute; 12. a second moving support; 1201. a vertical portion; 1202. a horizontal portion; 13. a pipe bracket; 1301. a ball bearing; 14. a rib plate.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are only some embodiments, not all embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "front", "rear", "horizontal", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
As shown in fig. 1 and 2, a fixture for processing external threads of a copper pipe comprises a base 1, wherein a fixed support 2, a first movable support 3 and a first sliding groove 4 are arranged on the same horizontal axis of the base 1, the bottom of the fixed support 2 is fixed on one side of the base 1, one end of the first sliding groove 4 is close to the fixed support 2, the other end of the first sliding groove extends to the other side edge of the base 1, and the first movable support 3 is arranged on the first sliding groove 4; a main shaft 5 is arranged above the fixed support 2, a synchronous clamping mechanism 6 is arranged on the end face, facing the first movable support 3, of the main shaft 5, and a bulge 7 is arranged in the middle of the synchronous clamping mechanism 6; an auxiliary shaft 8 is arranged above the first movable support 3, a bearing 9 is arranged on the end face, facing the fixed support 2, of the auxiliary shaft 8, and an auxiliary guide post 10 fixed on the auxiliary shaft 8 is arranged in the middle of the bearing 9; the primary shaft 5 and the secondary shaft 8 are on the same horizontal axis.
As shown in fig. 3 and 4, the synchronous clamping mechanism 6 includes a fixed disk 601 fixed on the main shaft, and a rotating disk 602 coaxial with the fixed disk 601, wherein the fixed disk 601 is sleeved outside the rotating disk 602; 6 radial sliding grooves 603 are uniformly distributed in the fixed disc 601, each sliding groove 603 is provided with a clamping arm 604, the side surface of each clamping arm 604 is a rack surface 605, and the end part of each clamping arm 604 is provided with an arc-shaped clamping head 607; the rotary disc 602 is provided with 6 gear shafts 606 engaged with the rack surface 605, the gear shafts 606 are mounted on the rotary disc 602, the rotary disc 602 is provided with gear rings 608 engaged with the gear shafts 606, and the gear shafts 606 and the clamping arms 604 are arranged in one-to-one correspondence. The clamping arm 604 has a sliding end, the end of the sliding end is located in the radial sliding groove 603, and a fixed block and a limiting block are arranged in the sliding groove 603.
The middle of one side of the rotating disc 602, which is provided with the gear shaft 606, is provided with a spherical bulge 7, copper pipes with different pipe diameters can be supported on the spherical bulge 7 at any time, the middle of the other side of the rotating disc 602 is connected with a motor through a transmission shaft, and the rotating disc is driven by the motor to rotate more conveniently and easily.
The gear ring 608 on the rotating disc 602 drives the 6 gear shafts 606 to synchronously rotate in one direction, and drives all the clamping arms 604 to synchronously move along the radial direction, so as to clamp and release the copper pipe.
Specifically, a second sliding groove 11 parallel to the first sliding groove 4 is further arranged on the base 1, a second movable support 12 is mounted on the second sliding groove 11, the second movable support 12 is provided with a vertical portion 1201 and a horizontal portion 1202, a pipe support 13 is arranged at the end portion of the horizontal portion 1202, the pipe support 13 is located right above the first sliding groove 4, and the pipe support 13 is used for supporting the copper pipe.
The inner surface of the pipe bracket 13 is provided with a plurality of grooves, and a plurality of balls 1301 are embedded in the grooves. The setting of ball 1301 makes things convenient for conduit saddle 13 to slide along the copper pipe outer wall, according to the progress of processing, conveniently adjusts the position of support at any time.
Specifically, a plurality of diagonal draw bars are arranged between the vertical part 1201 and the horizontal part 1202, and the diagonal draw bars play a role in enhancing the strength of the horizontal part 1202 and stabilizing the second movable bracket 12; the pipe bracket 13 is semicircular, the radian of the inner surface of the pipe bracket is the same as that of the outer ring of the copper pipe, the length of the pipe bracket 13 is larger than the width of the horizontal part 1202, and the vertical height of the pipe bracket 13 is the same as the clamping height of the copper pipe. The semicircular pipe support 13 is matched with the outer ring of the copper pipe, so that the copper pipe can be supported just, the copper pipe is wrapped, the pipe support 13 does not slide along with the second movable support 12, and the position of the support can be adjusted conveniently at any time.
Specifically, the bearing 9 is a bearing with a seat, and is directly connected with the auxiliary shaft 8 through a bolt, different types of bearings can be used according to copper pipes with different pipe diameters, and the bearing is not in direct contact with the auxiliary guide post 10. The auxiliary shaft 8 and the auxiliary guide column 10 play a role in guiding and positioning, so that the copper pipe is kept horizontal, and the bearing can enable the copper pipe to rotate along with the main shaft without being separated from the auxiliary shaft.
Specifically, the diameters of the auxiliary guide posts 10 are smaller than the inner diameter of the copper pipe, so that the copper pipe can be normally sleeved into the auxiliary guide posts 10, and the end parts of the auxiliary guide posts are of conical structures, so that the auxiliary guide posts are easy to align to pipe openings during sleeving, and the operation is more convenient.
Specifically, as shown in fig. 6, the first sliding groove 4 and the second sliding groove 11 are both "T" shaped grooves, and the first movable bracket 3 and the second movable bracket 12 are provided with a lap edge on the "T" shaped grooves, so that the positions of the two movable brackets can be fixed by bolts.
Specifically, fixed bolster 2 lug weld is in on the base 1, make fixed bolster 2 is firm to be fixed on the base 1 avoids the fixed bolster to take place to rock, the side of fixed bolster 2 with still be equipped with floor 14 between the base 1, further strengthen and stabilize fixed bolster 2 to reinforcing copper pipe fixed stability.
When the clamp for processing the external thread of the copper pipe is used, one end of the copper pipe to be processed is abutted against the spherical bulge 7, the control motor drives the rotary disc 602 to rotate anticlockwise, the gear ring 608 on the rotary disc 602 rotates anticlockwise along with the rotary disc 602, so that 6 gear shafts 606 are driven to rotate anticlockwise, and the gear on the upper portion of each gear shaft 606 drives each clamping arm 604 to move towards the copper pipe simultaneously until the copper pipe is clamped; moving the first moving support 3 to a proper position, connecting the other end of the copper pipe with the bearing 9 and sleeving the copper pipe on the auxiliary guide post 10; at this time, the second movable bracket 12 is moved, and the copper pipe is held by the pipe holder 13, so that the axial stability of the copper pipe is maintained. The processing of the external thread of the copper pipe can be started, and the second movable support 12 is moved in real time to support different parts of the copper pipe in the processing process. When the copper pipe is machined, the rotating disc 602 is rotated clockwise, so that the gear shaft 606 is rotated clockwise to drive the clamping arm 604 to move in the opposite direction along the radial direction, and the copper pipe is loosened.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. A clamp for processing external threads of a copper pipe is provided with a base and is characterized in that a fixed support, a first movable support and a first sliding groove are arranged on the same horizontal axis of the base, the bottom of the fixed support is fixed on one side of the base, one end of the first sliding groove is close to the fixed support, the other end of the first sliding groove extends to the edge of the other side of the base, and the first movable support is arranged on the first sliding groove; a main shaft is arranged above the fixed support, and a synchronous clamping mechanism is arranged on the end face, facing the first movable support, of the main shaft; an auxiliary shaft is arranged above the first movable support, a bearing is arranged on the end face, facing the fixed support, of the auxiliary shaft, and an auxiliary guide column fixed on the auxiliary shaft is arranged in the middle of the bearing; the main shaft and the auxiliary shaft are on the same axis.
2. The fixture for processing the external thread of the copper pipe as recited in claim 1, wherein the synchronous clamping mechanism comprises a fixed disk fixed on the main shaft and a rotating disk coaxial with the fixed disk, and the fixed disk is sleeved outside the rotating disk; a plurality of radial chutes are uniformly distributed on the fixed disc, each chute is provided with a clamping arm, the side surface of each clamping arm is a rack surface, and the end part of each clamping arm is provided with an arc-shaped chuck; the gear rack is characterized in that a plurality of gear shafts meshed with the rack surfaces are arranged on the rotating disc, the gear shafts are installed on the rotating disc, gear rings matched with the gear shafts are arranged on the rotating disc, and the gear shafts and the clamping arms are arranged in a one-to-one correspondence mode.
3. The clamp for processing the external thread of the copper pipe as recited in claim 2, wherein a spherical protrusion is arranged in the middle of one surface of the rotating disc, on which the gear shaft is arranged, and a motor is connected to the middle of the other surface of the rotating disc through a transmission shaft.
4. The clamp for machining the external thread of the copper pipe according to claim 1, wherein a second sliding groove parallel to the first sliding groove is further formed in the base, a second moving support is mounted on the second sliding groove and provided with a vertical portion and a horizontal portion, a pipe support is arranged at the end of the horizontal portion and located right above the first sliding groove, and the pipe support is used for supporting the copper pipe.
5. The fixture for processing the external thread of the copper pipe as recited in claim 4, wherein a plurality of grooves are formed on the inner surface of the pipe bracket, and a plurality of balls are embedded in the grooves.
6. The clamp for processing the external thread of the copper pipe as recited in claim 4, wherein an inclined pulling plate or a plurality of inclined pulling rods are arranged between the vertical part and the horizontal part; the pipe bracket is semicircular, the radian of the inner surface of the pipe bracket is the same as that of the outer ring of the copper pipe, the length of the pipe bracket is larger than the width of the horizontal part, and the vertical height of the pipe bracket is the same as the clamping height of the copper pipe.
7. The fixture for processing the external thread of the copper pipe as recited in claim 1, wherein the bearing is a bearing with a seat and is directly connected with the auxiliary shaft through a bolt.
8. The fixture for processing the external thread of the copper pipe as recited in claim 1, wherein the diameters of the auxiliary guide posts are all smaller than the inner diameter of the copper pipe, and the end parts of the auxiliary guide posts are all in a tapered structure.
9. The fixture for processing the external thread of the copper pipe as recited in claim 1, wherein the first sliding groove is a T-shaped groove, and a sliding limiting block and a positioning block are arranged in the T-shaped groove.
10. The clamp for processing the external thread of the copper pipe as recited in claim 1, wherein the fixing bracket is fixed on the base in a bolt or welding manner, and a rib plate is further arranged between the side edge of the fixing bracket and the base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920160728.9U CN209830927U (en) | 2019-01-30 | 2019-01-30 | Clamp for processing external thread of copper pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920160728.9U CN209830927U (en) | 2019-01-30 | 2019-01-30 | Clamp for processing external thread of copper pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209830927U true CN209830927U (en) | 2019-12-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920160728.9U Active CN209830927U (en) | 2019-01-30 | 2019-01-30 | Clamp for processing external thread of copper pipe |
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| Country | Link |
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| CN (1) | CN209830927U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111251099A (en) * | 2020-01-20 | 2020-06-09 | 浙江康瑞阀门有限公司 | Processing equipment of high-efficient valve body |
| CN111266673A (en) * | 2020-03-31 | 2020-06-12 | 宁波新鸿瑞精密模具有限公司 | Multi-station rotary transfer drilling and tapping machine |
| CN112372532A (en) * | 2020-10-30 | 2021-02-19 | 常德鑫睿新材料有限公司 | Pneumatic clamp for preventing metal part from deforming |
| CN113245990A (en) * | 2021-07-05 | 2021-08-13 | 南通好的防腐装备有限公司 | A grinding device for anticorrosive pipeline production |
-
2019
- 2019-01-30 CN CN201920160728.9U patent/CN209830927U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111251099A (en) * | 2020-01-20 | 2020-06-09 | 浙江康瑞阀门有限公司 | Processing equipment of high-efficient valve body |
| CN111266673A (en) * | 2020-03-31 | 2020-06-12 | 宁波新鸿瑞精密模具有限公司 | Multi-station rotary transfer drilling and tapping machine |
| CN111266673B (en) * | 2020-03-31 | 2021-05-14 | 宁波新鸿瑞精密模具有限公司 | Multi-station rotary transfer drilling and tapping machine |
| CN112372532A (en) * | 2020-10-30 | 2021-02-19 | 常德鑫睿新材料有限公司 | Pneumatic clamp for preventing metal part from deforming |
| WO2022088488A1 (en) * | 2020-10-30 | 2022-05-05 | 常德鑫睿新材料有限公司 | Pneumatic clamp for preventing metal part from deforming |
| CN113245990A (en) * | 2021-07-05 | 2021-08-13 | 南通好的防腐装备有限公司 | A grinding device for anticorrosive pipeline production |
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